Hinge.



J. E. AHLVIN.

HINGE.

APPLIOATIUN FILED APR.16, 1908. 923,400. Patented June 1,1909.

. 2 SHEETS-SHEET 2. '10

1HE Nenn/s PETERS tional view of the hinge taken as indicated at line 5 of Fig. l; Fig. 6, a broken bottom view the heel-plate and co-acting with the cam C1 UllFFED STATES ATENVF OFFFME.

JOHN E. AHLVIN, OF JOLIET, ILLINOIS.

HINGE To all whom fit may concern:

Be it known that l, JOHN E. AHLVIN, a citii zen of the United States, residing at Joliet, in the county of Till and State of Illinois, have invented a new and useful Improvement in Hinges, of which the following is a specification.

My invention relates particularly to hinges for doors capable of swinging in two directions, such as butler s pantry doors; and my primary object is to provide an improved hinge capable of maintaining the door in either of three positions, of durable and comparatively inexpensive construction and capable of being readily applied.

My invention is illustrated in the accompanying drawings, in which Figure l represents a broken vertical sectional view of a door and my improved hinge applied thereto; Fig. 2, a rear elevational view of the improved hinge, partly in section, the section being taken as indicated at line 2 of Fig. l Fig. 3, a broken sectional view taken as indicated at line 3 of Fig. l Fig. el, a broken vertical section taken as indicated at line 4 of Fig. 3; Fig. 5, a horizontal sec of that portion of the hinge which is carried by the door, Fig. 7, a plan view of the camequipped floorlate employed; and Fig. 8, a side elevationa view of the same.

In the construction illustrated, A represents the licor; B, a swinging-door O, a fioorplate, or hinge-member, equipped with a cam O1; D, a heel-plate, or hinge-member, connected with the door; and D1, a rollerequipped spring-held yoke connected with of the floor-plate.

The floor-plate C comprises a rectangular member provided near its corners with screwopenings c; a central pivot boss c1; and the annular cam O1 encircling the central pivot- Specication of Letters Patent.

Application filed April 16, 1908.

boss. The pivot-boss c1 is provided with a central perforation c2 and a counter-sink, or bore, c3. The cam O1 is provided at its rear portion with a deep depression c4 flanked by gradual inclines c5 which rise to meet a horizontal surface c6. At the junctions between the inclines c5 and the horizontal surface c6 are depressions c7, cs located on opposite sides of the pivot-lug c1. One or the Patented June 1, 1909.

Serial No. 427,444.

other of the depressions c7, o8 serves to receive the roller lli when the door is in a Wide-open position, depending upon which way the door is opened. As shown in Fig. 3, the floor late is provided on its lower side, beneath tlgie high portion of the cam and the pivot-lug c1, with a chamber e9 adapted to receive a head of a rivet which serves to connect the hinge-members together.

The heel-plate D comprises a barrel d adapted to encircle the cam O1 and having a top d1 equipped on its lower surface with a pivot-boss d2 tting in the bore of the pivotboss c1; a forwardly extending flange, or arm, d3 projecting from the front wall of the barrel d and provided with screw-holes d4 adapted to receive screws entering the lower edge of the door an upwardly extending arm d5 rising from the rear portion of the barrel d and provided with a screw-hole d receiving a screw adapted to enter the rear edge of the door; guide-anges (t7 projecting forwardly from the base-portion of the member d5 and joined at their front edges by a rivet d8 adapted to prevent separating of the iianges, the wall d1 of the barrel d being cut away between said guide-Hanges to afford a slot Z9 through which the spring-held yoke D1 projects, as is shown in Figs. l. and 2; and a nut d10 cast integrally with the member di at the front vertical surface thereof near the top of said member. The pivot-lug d2 and the horizontal wall d1 by which it is carried are provided With a perforation in alinement with the perforation c2 of the floor-plate, and the floor-plate and heel-plate of the door are con nected together by a pivot d which may be in the form of a rivet, as shown. The heelplate is secured to the door by screws passing through holes c1 in a flange surrounding the barrel d, see Fig. 5.

The member D1 preferably comprises a stem, or guide-rod, d equipped at its lower end with a yoke (Z13 in which is j ournaled a guide-roller 114 and a cam-rollerd15; an externally threaded sleeve di extending through the nut d10; a coil-spring d1? coniined between the lower end of the member di and the upper end of the yoke (213,' and an externally notched collar dlg resting on the fixed nut d10 and provided internally, as shown in Fig. 3, with a lug d which is received by a vertical slot d20 with which the threaded sleeve, or tubular screw (Z111 is provided. At the point where the collar 18 is located, the vertical member (Z5 of the heel-plate is provided with a slot (Z21 into which the peripheral portion of the collar Z18 projects. The upper end of the rod, or shank Z12 of the member D1 projects into the bore Z22 of the tubular screw d1, as shown in Fig. 4.

As will be understood most readily from Fig. 2, the aXes of the guide-roller (Z11 and the roller Z15 are horizontally disposed and lo cated in the plane of the door, the guideroller being confined between the guideilanges Z7 and the cam-roller Z15 resting normally on the low point c1 of the cam C1.

The floor-plate is secured to the floor by means of screws f passing through the perforations c. The rear lower corner of the door is recessed to accommodate the barrel CZ, and the rear edge of the door is mortised to provide a recess f1 adapted to receive the rear vertical member Z5 of the heel-plate and the attendant parts. By preference, the upper surface of the top wall Z1 of the barrel Z is equipped with flanges 23 extending parallel with the guide-Hanges Z7 and spaced a short distance therefrom, as best shown in Fig. 5. When the door is mortised to receive the heel-plate, narrow portions f2 of the door flanking the recess f1 are left, and these narrow portions are received between the guideflanges Z7 and the flanges cZgs. f Thus the flanges d afford metal bindings adapted to prevent splintering of the thin portions of the wood.

From the foregoing detailed description the operation will be readily understood. The cam-roller Z1-5 rests normally on the low portion c4 of the cam C1, the spring cZ17 being normally under tension and the door being thus held normally in its closed position. Then the door is swung in one direction, the cam-roller mounts one of the inclines of the cam C1 and enters one of the recesses c7, C8, according to the direction in which the door is swung, thereby locking the door in the open position. Should it be desired to increase or decrease the tension of the spring Z17, this may be effected by swinging the door to a wide-open position and turning the member cZ1S by means of an instrument inserted through the slot (Z21 of the vertical arm Z5 of the heel-plate. When the member CZ18 is turned, it rotates the tubular screw dw, thereby causing the screw to raise or lower, as the case may be, to change the ten sion of the spring.

1t is noteworthy that the improved automatic hinge may be applied to a door with but very little mortising of the door; and it may be stated that the device is thoroughly durable and absolutely reliable in operation. By arranging the cam C1 with its low point at the rear edge of the door, it

is possible, to arrange the spring-held yokemernber D1 in close juxtaposition to the vertical arm Z5 of the heel-plate, thus rendering it unnecessary to mortise the door deeply.

The foregoing detailed description has been given for clearness of understanding only, and no undue limitation is to be understood therefrom.

What 1 regard as new, and desire to secure by Letters Patent, is-

1. The combination with a iioor-plate provided on its upper surface with a cam, of a heel-plate pivotally connected with said floor-plate and equipped with a vertical member adapted for attachment to the rear edge of a door, a guide adjacent the base portion of the vertical member of said heelplate, a plunger equipped with a roller engaging said guide and equipped also with a roller engaging said cam, and a spring yieldingly holding said plunger in a depressed position.

2. The combination with a iioor-plate provided on its upper surface with an annular cam, of a heel-plate pivotally connected with said floor-plate and equipped with a vertical arm adapted for connection with the rear edge of a door, a plunger adjacent the vertical arm of said heel-plate equipped at its lower end with cameengaging means, a spring normally depressing said plunger, and an adjusting screw at the upper end of said spring connected with said vertical arm of said heel-plate.

3. The combination with a floor-plate provided on its up er surface with an annular cam, of a heel)- with said floor-p ate and equipped with a vertical arm adapted for connection with the rear edge of a door, a plunger adjacent the vertical arm of said heel-plate equipped at its lower end with cam-engaging means, a spring normally depressing said plunger, an adjusting screw at the upper end of said spring connected with said vertical arm of said heel-plate, and screw-rotating means accessible from the rear of said vertical arm.

4. The combination with a iioor-plate equipped with a cam, of a heel-plate pivot? ally connected with said floor-plate and equipped with a vertical arm adapted for connection with the rear edge of a door, a nut carried by said vertical arm, a hollow screw in said nut, a plunger extending into said hollow screw and equipped at its lower end with cam-engaging means, and a spring bearing on said plunger and engaging said screw.

5. The combination with a floor-plate equipped with a cam, of a heel-plate pivotally connected with said floor-plate and equipped with a vertical arm adapted for connection with the rear edge of a door;y

late pivotally connected y guide-flanges projecting forwardly from the lateral edge portions of said Vertical arm at the base thereof, a nut carried by the upper portion of said Vertical arm, a plunger equipped with a roller engaging said guide- Hanges and equipped beneath said irstnamed roller with another roller engaging said Cam, a spring encircling said plunger,

a screw received by said nut and engaging sald sprlng, and screw-rotating means ae- 10 eessihle from the rear of said vertical arm.

JOHN E. AHLVIN.

In presence of- L. HEISLAR, R. SCHAEFER. 

